alternative to six-ing it up..., turbo + waterboxer ??? Options

[dtravni]

hello, 914-ers - i'm sure this is not a new topic - the problem is that i'm new to 914club. anyways, here goes.

my son & i bought a pretty nice 'california car' coupla years ago & we're debating pros/cons of pushing in a 911 6 - not exactly a glide (& not exactly cheap, either). it seems to me that a worthy alternative might be
a 2 (or 2.1) 4 cylinder watercooled Vanagan engine (waterboxer) -
all things considered, a better alternative. in fact, if the aircooled 914 4
could take the thermal loading, adapting a turbo in IT would be even better. i'm of the opinion that the performance would be comparable to a
2.7+ 6, and a whole lot more agreeable in the installation (transmission, motor mounts, cabling, etc). the plumbing (exhaust, intake, & cooling seem to be more straightforward too, compared to the adaptation required for the 6-er).

i'm sure that there are some out there that have considered/done this
installation - i'd be most interested in hearing your advice & tales of joy/woe.

[Katmanken]

Yup,

Wasserboxers can be turboed. Here is Marcotheturbosteamengine's recipe for success....

"ive been making this turbo wasserboxer for 2 years and finaly got it dynoed, i found out on the dyno that my spring preasure on the seat of the valve is not enough, a can freely rev the motor to 8200 but with 15psi+ of boost the motor seems to valve flote but in a very strange way, as i increase boost the valve flote rpm becomes lower and lower respective of boost preasure, and a 26psi the motor hits a rev limit a 5900!!!!

so over the winter i will have to put bigger springs in so i can run 30psi@8200

the motor made 340bhp@5900 and 311ftLB@5250
the power starts at 4250 and hit the valve flote at 5900, but when i get it sorted it should go to 8000 as the power a 5900 was still going up!!


these are the specs of the motor

Displacement 2120cc Wasserboxer

Builder Max Morley

Crank 76.4mm Oettinger

Rods 5.4in Scat H-beams with oil hole caps.

Pistons 94mm RossRacing pistons(custom made 45cc dish!!).

Rings Total Seal

Cam/lifters WebCam 86b 114lc .474thou retarded 4deg lift with 39g 12mm stem lifters.

Heads/ valve train Stock reworked by Oliver konff single groove keepers, remmel HD outer with WBX inner, ally retainer, 911 swivel feet, 1.25 CB rockers, reworked, lightened, balanced, Berg Hd rocker shafts, Aircool.net Hd Ally pushrods.

Valves 45mm in, 40mm ex, Nimonic-90 valves 8mm stems.

Compression 7.5 to 1

Ignition MSD DIS-4, 4 MSD coil packs(coil-on-plug)Controlled by Wolf3D EMS every 125rpm.

Spark Plugs NGKs 8s.

Carburation 8 injectors Controlled by Wolf3D EMS every 125rpm.
Inlet Manifold/ turbo system 2in individle runners to a 2L plenum with a single 56mm Ford Cosworth throtalbody, 3in silicone hose to a chargecooler running to a Turbonectics T3/4 60-1 hybrid turbo .60in / .62ex 3in filter with a Mocal Oil scavenge pump

running 26psi of boost on regular pumpgas(no bull)

Exhaust 1.5/8 stainless turbo header(custom made) with a 3in exit

Flywheel Kep 200mm T4

Clutch Kep Stage2 with a Cb sprung 6 puck

Oil 76 orange stuff?

Oil Cooler Porsche 993 oil cooler

and quick thanks to everyone that helped me along the way"


Go to Shoptalkforums.com and poke around in the forced induction section , the wasserboxer/oxyboxer type 4 section, the type 4rum (type IV engine stuff) and last but not least Jakes very own forum Aircooled Technology. Search Marcothesteamengine and Marcotheturbosteamengine for big horsepower wasserboxers.

Now, I don't expect to see you for awhile..... (IMG:http://www.914world.com/bbs2/html/emoticons/happy11.gif)

Ken